The effect of seasonal temperature extremes on sediment rejection in three scleractinian coral species

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• 作者：A. Ganase ; P. Bongaerts ; P. M. Visser ; S. G. Dove
• 关键词：Sedimentation ; Temperature ; Time ; lapse ; Sediment rejection
• 刊名：Coral Reefs
• 出版年：2016
• 出版时间：March 2016
• 年：2016
• 卷：35
• 期：1
• 页码：187-191
• 全文大小：906 KB
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• 作者单位：A. Ganase (1)
  P. Bongaerts (2) (3)
  P. M. Visser (4)
  S. G. Dove (1) (2) (3)
  
  1. School of Biological Sciences, The University of Queensland, St Lucia, QLD, 4072, Australia
  2. Global Change Institute, The University of Queensland, St Lucia, QLD, 4072, Australia
  3. ARC Centre of Excellence for Coral Reef Studies, The University of Queensland, St Lucia, QLD, 4072, Australia
  4. Department of Aquatic Microbiology, University of Amsterdam, PO Box 94248, 1090 GE, Amsterdam, The Netherlands
  
• 刊物类别：Earth and Environmental Science
• 刊物主题：Earth sciences
  Oceanography
  Geology
  Sedimentology
  
• 出版者：Springer Berlin / Heidelberg
• ISSN：1432-0975

文摘

Sedimentation from resuspension following storm surge is a natural occurrence on coral reefs, and scleractinian corals have adapted to effectively reject sediment. However, it is unclear whether the physical ability to reject sedimentation is affected during seasonal temperature extremes. We acclimated three coral species (Montipora aequituberculata, Lobophyllia corymbosa and Fungia fungites), with different active shedding mechanisms, to three temperature treatments (winter minimum, summer maximum and mean). Corals were then exposed to a sediment rejection experiment in which we measured clearance rates and tissue inflation cycles associated with the clearance of sediment. Temperature impacted clearing rates of M. aequituberculata, which exhibited significantly faster sediment rejection under winter temperatures. Fungia fungites, on the other hand, exhibited significantly higher tissue inflation rates under summer temperatures. Although limited in scope, this study demonstrates that temperature can have a strong effect on the response of corals to sedimentation.